Dispensing valve



1959 L. M. COLLINS 2,901,153

DISPENSING VALVE Filed May 15, 19s"! a 24 Q I INVENTOR. LEON/92D M Co lNS United States Patent i DISPENSING VALVE Leonard M.,Go'llins, Hollywood, Calif.,.assignrto Pressure Dispensers, Inc LosAngeles, Calif., 21 corporahen of California Application May- 13, 1957, Serial No. 658,820

23 Claims. (Cl. 222-525) This invention relates generally to dispensing valves, and relates specifically-"to slidably opening and closing dispensing valves for use in connection'with dispensing of liquids and powdery materials such as, for example, liquid and powder detergents.

In the past, liquid and powder detergents'and the like have been dispensed from bottles and other containers having a pouring spout aifixed to the container and'having also a removable cover top which may be, forexample, threaded'onto thepouring spout. There are severaldisadvantages to theconventional method. The cover top, being removable, may be misplaced or dropped and broken by the user. Further, the use of pouring spouts generally requires that a relatively heavy material be used therefor contributingto the cost of manufacture and shipping.

Another'disadvantage of the presentconventional dispensing container is that the pouring spouts and-the cover tops aflixed thereover protrude from the container top a relatively great distance thus prohibiting ready stacking of the containers upon each other.

1 It is advantageous to'use a 'slidably openingand closing valve that is at all times atfixed to the dispensing container, thus eliminating the separable cover top and-the heavy pouring spout, and which, in its closed position, protrudes buta short distance abovethe container top to enable ready stacking of aplurality-of the containers.

Slidably opening and closing valves conventionally consist of a pair oftelescoping members theouter member having one or more inlet ports comrrtunicatin'gwith the material to bedispensed, and the innermember having outlet ports. When the ports of each member are aligned, the liquid can then be dispensed. Registry means for insuring alignment of the ports of each member-assumes a variety of forms; for example, themost common form for alignment of the'ports incorporates a pin and slot arrangement preventing rotation of the telescoping members with respect to each other as theyare slidably' moved relative to each other. In this manner, the ports, upon movement of one member a predetermined distance,- can always be placed .inalignment. Such registry means add considerablydo' the cost of production and are not--suitable, for example, where the valve is* tobe aifixedto-a throwaway dispensing container.

Another disadvantag of such conventional slidably opening and closing valves is that the necessary clearance between the telescoping members is a source'of leakage of materials from the container.

Bearing in rnindthe foregoing facts, it is-a major object of the present invention to provide a slidably opening and closing valve which is extremely simple inconstrtiction and inexpensive to manufacture, the valveconstruction eliminating the protruding neck, covering cap, and pouring spouts of conventional dispensing meansg' thereby enabling'the stackingof a plurality of 'containe'rsupon which the valve/is mounted. I

A further object of the present invention 'is' to provide a slidably opening and closing valvecomprising'tele's'cop- 2,901,153 Patented Aug. 25, 1959 '2 ing membershaving a simple and inexpensive construction wherein conventionalmeans for registering inlet and outlet ports in each of the telescoping members is eliminated.

Still another object of the present invention 'is to provide a pair oftelesco'ping' members, which are readily assembleabl to form a slidably open and clo'sable two position valve which, in its open position, regardless of the relative rotation of the telescoping members, has means for communicating-the inlet and outletports of each member with each other, and which; in its closed position, regardless of the relative-rotation of the telescoping members, positively prevents communication of these ports with each other.

Still a further object-ofthe-present invention is to provide a slidably opening and closing valve capable of ready assembly and having a pair-of telescoping members which are substantially leak-proof"when in closed position.

Yet anotherobjectofthe present invention to-provide a dispensing valve comprising-a pair of telescoping members wherein one of the members isslightly tapered," and the other is cylindrical to provide asealingengagement between said members whensaid valve is in the closed position.

Still another object of the present invention is to provide means for readily affixing the dispensing valve toan opening in a dispensing container.

These and other objects of thepresent invention will becom clearly understood by referring to the following description, and to the accompanying drawings, in which:

Figure l is a partially cut-away perspective view of a'dispensing container showing one preferred form of my valve mounted therein, the valve being-shown in its open position; a

Figure 2 is a greatly enlarged axial cross-section of the valve shown in Figure 1; p

ig'ur 'S is a greatly enlarged axial cross-section of the valve shown in Figure l, the valve being shown in its closed position. 7

"Figure 4 is a cross section along the line 4-4 of Figure 2;

Figure5"is a greatlyenlarged axial cross-section of a modification of the valve shown in Figure 1, the valve being shown in full line tu'its'o en position and in dotted line iflits closed position; and p Figure '6-is a cross sectio'ri along the line 6 6 of Figure 5.

Referring 'now to Figures'l' and Zapreferred form of my' dis'pensi'ng valvelti is shown'rn'ounted on'the top end 1201? a dispensing container14. The valve 10 consists of two 'tele'scoping' sections including an outer sleeve 16, and an inner dispensing closure memberlS therein.

The sleeve 16 of the valveIO has'an axial bore 20 and apair of transverse inlet ports '22'fo'rmed therein, the interior of the container communicating with the sleeve bore by-rneansof'th'ese transverse ports. The closure member-18 has an elongated stem '19 which is sl-idably-received by the sleeve bore 20, the 'stem'haw ing formed therein alongitudinal axial outlet'or dispensing passage-23 continuing "upwardly through an en larged head 32 to be described.

The passage 23 is adapted to communicate with the transverse inlet ports 22 of-the sleeve 16 when the closure member 18 is suitably positioned. The-communication means includes transverse passages 24 extending preferably radially from the longitudinal outlet passage 23 into an annulargroove 25 formed within the outer wall of the stem'I9 of the closure memberlS, as best seen inFigures 2 and 4.

In order to suitably position the closure member 18 to assure communication of inlet ports 22 and the outlet passage 23 a stop member or flange 28 is preferably integrally aflixed to the lower end of the stem 19 to limit the upward movement of the closure member. The flange 28 is enlarged with respect to the lower end of the stem 19, forming at the stem-flange juncture an annular shoulder 29 adapted to abut the lower end face 30 of the fixed sleeve 16 when the closure member 18 is moved to its uppermost position. As shown in Figures 2 and 4, upon abutment of shoulder 29 with end face 30, the annular groove 25 is in registry with the sleeve inlet ports 22.

It will be noted that the contents of the container 12 will be ejected either by gravity when the container is inverted. or by means of pressure applied to the container if the walls are pressure-deformable, through the sleeve inlet ports 22 into the annular groove 25; and the material will then move through the transverse passages 24 into the longitudinal dispensing passage 23.

It will be further noted that the transverse passages 24 need not be in alignment with the sleeve inlet ports 22, inasmuch as the material to be dispensed will always flow from the inlet ports into the annular groove 25. and thence into the transverse passages. Thus, regardless of the angular position of the closure member 18 with respect to the sleeve 16. means for communicating the inlet ports 22 and the outlet passage 23 are provided by merely moving the closure member 18 upwardly the maximum distance. as just described.

In order to insure a positive closure of the dispensing valve neon sim le downward movement of the closure member 18, the slidable stem 19 terminates in the enlarged head 32. previously mentioned, which is adapted to limit the downward movement of the stem. The fixed sleeve 16 terminates in an enlarged cap 34 and as the head 32 of the closure member 18 is slidably moved downwardly from the open position of Figure 2 to the position of Figure 3. the head abuts the cap to restrict further downward movement thereof. The amount of linear movement of the cap from its u ermost position (Figure 2) to its lowermost position (Figure 3) is such as to com letely remove the annular groove 25 from communic tion with the inlet ports 22, as is clearly shown in Figure 3.

To further insure that the valve 10. in its closed position. is leak-proof. means are provided for positively preventing the entry of material from the container through the inlet ports 22. between the stem 19 and sleeve 16. and thence through the annular groove 25 to the dispensing passa e 23. To this end, the sleeve 16 and closure member 18 are each made of a resiliently defo mable material, such as, for exam le polyethylene. As shown in Fi ure 2. the axial bore 20 of the sleeve 16 is formed with a ta ered section 36 that progressively constricts the lower end of the bore. The upper section of the stem 19 in the region of the annular groove 25 is sub tantially cylindrical, the lower section 37 of the bore 20 being complementary to the tapered section 36, so that when the closure member 18 is moved downwardly to its lowermost osition (Figure 3). it will exert an outward pressure upon the lower tapering wall of the bore section 36. Tight sealing engagement between the sleeve 16 and the stem 19 is thus provided in the region of the annular groove 25 so that the possibility of leakage through the inlet ports 22 to the annular groove is eliminated.

It will be seen that because the stem 19 is preferably pinched inwardly in its lower section 37 so that it may be easily slid upwardly through the pinched bore 36 to the open position of Figure 2.

The upper surface 38 of the sleeve cap 34 is slightly convex and the lower surface 40 of the head 32 is oppositely curved so that the thumb and finger may be '4 readily inserted between these surfaces to exert upward pressure upon the head thus readily opening the dispensing valve 10.

Attention is drawn to the fact that the sleeve cap 34 and the head 32 project only slightly above the top end 12 of the container 14 when the valve 10 is in closed position, so that the containers may be readily stacked with the valves mounted therein. The dispensing container 14 is provided with a slightly recessed bottom (not shown) to facilitate the nesting.

The resilient deformability of the sleeve 16 and the closure member 18 is also highly advantageous in effecting easy assembly of the valve 10 and for enabling ready assembly of the valve proper to the container 14 in a leak-proof manner.

In order to provide for easy assembly of the valve 18 the initial insertion of the closure member 18 within the sleeve 16 must be readily accomplished. To this end, the sleeve bore 20 is preferably made slightly downwardly tapering, the diameter of the upper end or mouth 42 of the bore 20 being substantially equal to the diameter of the stop member 28. As mentioned before, the lower section of the sleeve bore 20 is pinched inwardly in its lower section 36 for sealing purposes. However, the resilience of polyethylene, or many other plastic materials, is such as to readily permit complete passage of the stem 19 and the stop member 28 through the sleeve bore 20. Thereafter, the stem 19 and stop member 28 assume their original undistorted shape and size. Upon complete passage of the stop member 28 through the sleeve 16, the closure member 18 is then slidable from the open to the closed position, as previously described.

Once the valve 10 is assembled, it is readily mounted, so as to be leak-proof, in a circular opening 44 in the container top 12, in the following manner. The cap 34 comprises an upper lid 45 of greater diameter than the opening 44, and a cylindrical plug 46 of diameter substantially equal to the container opening 44. The side wall of the plug 46 has an annular bead 48 integrally formed thereon, the outer diameter of which is greater than that of the container opening 44.

The cap 34 of the assembled valve 10 is then forcibly inserted through the container top opening 44 so that the resilient bead 48 is compressed while passing therethrough. After passing therethrough, the bead 48 returns to its normal size and prevents movement of the sleeve 16, relative to the top end 12 of the container 14.

The head 48 is spaced from the undersurface 52 of the lid 45 an axial distance substantially equal to, or slightly less than, the thickness of the container top 12 measured at the opening 44. The bead 48 and lid 45 are thus forced to tightly contact the edges of the opening 44 and prevent any leakage of material from the container 14.

Referring now to Figure 5, a modification of my dispensing valve is shown designated by numeral and similarly comprises a resiliently deformable sleeve 16a press-fitted onto a container opening 44a, as previously described. The sleeve 16a has a resiliently deformable dispensing closure member 18a slidably movable therein and enclosed thereby.

As will be explained, the lower end 63 of the dispensing passage 60 of the closure member 18a is open and is adapted to be moved just above the sleeve inlet ports 2211. In this position, the inlet ports are placed in communication with the dispensing passage 60. It will thus be seen that the material from within the container 14 passes through the inlet ports 22a and thence directly into and through the dispensing passage 60 regardless of the circumferential positioning of the closure member 18a with respect to the fixed sleeve 16a.

The extent of upward movement of the closure member 18a necessary to insure appropriate communication is provided by an annular flange 64 preferably formed as a part of the closure member 18a intermediate its upper and lower ends 65, 63 respectively. The flange 64 rides within an enlarged intermediate bore section of main sleeve bore 20a and upon striking the upper annular shoulder- 68, formedat'the juncture between theenlarged bore "66 and the main bore 20a, prevents further upward movement of the :closure member 18a. In this uppermost position of the closure :member18a, the lower open end 63' thereof lies in direct communication with ports 22a.

It Will be 'seenthat shoulder68, in addition to limiting the upward" movement 1 of the closure member 18a 'also serves to retain the closure member within the sleeve 16a.

To close ithe valve-a, the' closuremember 18a is slid downwardly within bore 20a until-' thehead 32a of the closure member abuts the-cap"34a, as shown by the dot ted lines in Figu'rej. The iflange" 64 then assumesapdsition intermediate the ends of the bore66; also as shown in dotted line, and the lower end 6301? the' closure memberi18a is pressedagain'st an annular'sleeve seat '70. Any' leakage of -material from the: container through the inlet po'rts 22a' prevented in a manner similar-to that previously described with reference to valve 10. That is to sayfthe cylindrical stem 19a is slid ldownwardly into the sleeve bore 20a, which is tapered below theinlet ports-22a, to thus' enable an exceedingly tight engagement to be made between the sleeve bore and closure member wall in the region or the inlet ports.

The assembly of the valve 10a is accomplished in much the same manner as is'the valve 10. The stem 19a of the closure member'18a is slid downwardly within the sleeve bore 20a compressing the fiange' 64-and stretchingthe'bore20a considerably in order to permit the downward movement of the stem. The'fiange' 64 assumes its normalsize upon-entering the bore and rides therein within limits as" previously described. Attention is also drawn to the wedge shape'd transversecross sectionof the flange 64 enabling theflange-64 to be 'more readily initially inserted the mouth42a of the bore 20a.

It is sometimes desirable to provide still additional sealing means as the'closurememberl8ais depressed to abut seat 70. To this end, aninner plug 74, circularin crosssection, is concentrically-preferably integrally afllxedto thevalv'e seat '70 havinga diameter atthebase of the plug substantially equal to the? bore 60 of the closure member 18a. The-plug74- is slightly taperedinwardly frornthe base thereof, as for example, assuming the general shape of a frustrum of a cone to'facilitate its entrance into the bore of the stem 19a. Thus, upon depression of the closure member 18a, the bore60-is sealed by' the inner plug 74,- the plug 74 tightly interfitting the walls of'the stem19a; these walls beingforced slightly outwardly, thereby against the bore 20a of the sleeve 16a, as described'previously.

' It will thus be seen that the combination of the inner plug '74 alongwith the means'for providing tight engagement'between the sleeve walls and the'closure member 18a insure positive sealing engagement.

-While' several embodimentshavebeen shownanddescribed in some detail; it 'will be understood thatsubstantial changes and modifications can be made that lie within thescope of my invention. For this reason, I do not intend to be limited to the embodiments herein shown and described, "but only to the appended claims.

a I claim:

1. A dispensing valve for atop opening container which comprises: .a sleeve affixed to the opening'of said container and'having-a boretormed thereiman inlet port forming a passageway between the interior of said container and said"-bore;- a'dispensing closuremember-slidably movable within said :bore from a 'ifirst position :to a second position, and: =preSs-fitted within said 'bore for at least a portion of its travel in the region. ofssaid: second position; "a dispensing passage formed within said closure member andadapted to communicate with saidinlet port when said closuremember is in saidlfirstiposition, said inlet port being blocked "when said closureimember'is in 8 said second position, said closure member being positively sealed within said bore when said closure-member is in said second position to thereby prevent leakage of the materialto be dispensed from within said container into said dispensing passage, by means of the press-fit of said bore and closure member inthe region of said second position.

2. The dispensing valve definedin claim 1 wherein said dispensing closure-member is composed of a head portion at its upper endand an elongated stem'which is adapted to slidably move withinsaidsleeve bore,-said head portion protruding slightly above the top of said container when said valve is in closed position to thereby enable ready stacking of containers-in-which said valves are mounted.

3. A dispensing valve as defined in claim 1 having means for readily securing said closure member in said sleeve,=said-means comprising a flange'aifixed to said closure member of larger diameter than at least a portion of said sleeve bore and adapted to be forcibly inserted through at least a portion of said sleeve bore, the flange being adapted toabut a shoulder formed on said-sleeve to prevent upward movementthereof.

4. A dispensing valve for a top opening container which comprises: a sleeve made of resiliently deformable material, affixed to the opening in said container and extending downwardly therefrom and having a bore formed therein, said sleevehavingva portion thereof progressively constricted; at least one inlet port forming a passage between the interior of said container and said bore; a dispensing closure member having an elongated cylindrical stem slidable within said sleeve bore; and-a dispensing passageway formed within said closure member .and adapted to communicate with said inlet port when said closure member is in open position, said closure member being movable 'withinsaid bore to a closed position to close said inlet ports, said cylindrical closure member in said closed position resiliently-distending the vwalls of said constricted bore to thereby sealinglyengage'said closure memberwithin said sleeve and positively prevent leakage of material from within said container through said inlet port.

5 A dispensing valve for atop opening container which comprises: a sleeve made of resiliently deformable material afiixed to the opening in said container and extending downwardly therein, said sleeve-havinga bore formed therein, a portion ofsaidbore being progressively constricted; aninlet port forming a passage. between theinterior of said container and said bore and formed above said constricted portion of said sleeve bore; a dispensing closure member having an elongated cylindrical stem slidable within said sleeve bore; a dispensing passageway formed within said closure memberand adapted to communicate with said inlet port when said closure member is in open position; means for obtaining automatic communication between said dispensing passagewayiand said inlet port comprising movement-limiting means formed onsaid sleeve and on said closure member; and means for automatically obtaining a closure of said valve .upon downward movement of said closure. member which comprises downward-limiting means afiixed to the walls of said bore and said -sleeve, said closure member upon being moved downwardly within said bore, blocking said inlet ports and resiliently distending the constricted walls of said bore to thereby sealingly engage said closure member with the walls of said sleeve bore.

6. A dispensing valve for a container having an opening in one wall thereof, said wall having an outer surface and a lower surface, which comprises: a sleeve extending through said container opening having an upper thickened plug substantially equal to the diameter of said container opening, a resiliently deformable annular bead mounted onthe periphery of said plug, a lid of larger diameter than said plug and spaced from said bead and adapted to :overlap the upper edges of said container opening-the spacing between said lid and bead being slightly less than the thickness of said container wall at the opening thereof whereby said sleeve is adapted to be press-fitted on said container by forcing said plug through said container opening until said lid abuts the outer surface of said container wall and until said bead abuts the lower surface of said container wall, the sleeve being thereby mounted onto said container in a leak-proof manner and having formed therein, a bore; an inlet port communicating the interior of said container with said bore; a dispensing closure member slidably movable within said bore from an open position to a closed position; a dispensing passageway formed within said closure member and adapted to communicate with said inlet port when said closure member is in an open position, said inlet port being blocked when said closure member is in said closed position; and means for positively sealing said closure member within said bore when said closure member is in said closed position so as to prevent leakage of materials from within the container through said inlet port.

7. A dispensing valve for a container having an opening therein which comprises: a sleeve afilxed to the opening in the top of said container and extending downwardly therein, said sleeve having a bore formed therein; an inlet port forming a passage between the interior of said container and said bore; a dispensing closure memher having an outer wall slidably movable within said bore from an open position to a closed position, said bore having a smaller diameter than said closure member at the region in said bore corresponding to the closed position of said closure member; a longitudinal dispensing passage formed within said closure member; an annular groove formed within the outer wall of said closure member and communicating with said longitudinal dispensing passage by a passageway, said inlet port being adapted to communicate with said annular groove when said closure member is in an open position, and being blocked by the outer wall of said closure member when said closure member is in its closed position, said bore being of smaller diameter than said closure member at the region in said bore corresponding to the closed position of said closure member, providing thereby means for positively sealing said closure member within said bore so as to prevent leakage of material from said container through said inlet port into said dispensing passageway.

8. A dispensing valve for a container having an opening, which comprises: a sleeve, made of resiliently deformable material, affixed to the opening of the top of said container and extending downwardly therein, said sleeve having a bore formed therein which is constricted in its lower section; at least one inlet port forming a passage between the interior of said container and said bore and being positioned above said constricted section; a dispensing closure member having an elongated cylindrical stem slidable within said sleeve bore and terminating in an upper enlarged head; a longitudinal dispensing passage formed within said elongated stern of said closure member and extending through said enlarged head; and an annular groove formed within the periphery of said closure member; means for communicating said annular groove with said dispensing passage, said annular groove being adapted to communicate with said inlet ports when said closure member moves slidably upwardly to a predetermined position, said inlet ports being blocked by the walls of said closure member when said closure member is slid downwardly to a predetermined position wherein said cylindrical stem distends said tapered bore and positively seals said closure member within said bore, to thereby prevent leakage of materials from said container through said inlet ports.

9. The apparatus of claim 8 wherein the container opening is defined by a sidewall having an outer edge and an inner edge, said sleeve has an upper thickened plug substantially equal to the diameter of said container opening, a resiliently deformable annular head is mounted on the periphery of said flange, a lid of larger diameter than said plug is spaced from said head and is adapted to overlap the edges of said container opening, the spacing between said lid and bead being substantially equal to the thickness of said sidewall opening whereby said sleeve is adapted to be press-fitted onto said container by forcing said sleeve through said container opening until said lid abuts the outer edge of said sidewall and until said head abuts the inner edge of said sidewall to thereby mount the dispensing valve to the container in a leakproof manner.

10. The apparatus of claim 8 characterized in that said dispensing closure member has an enlarged lower end whereby when said closure member is slid upwardly, said enlarged lower end abuts the sleeve to prevent further movement, whereby communication between the annular groove and the inlet port of the sleeve is automatically obtained, said sleeve having means thereon to prohibit downward movement of said closure member past a predetermined point whereby, when said closure member is moved downwardly this maximum distance, said annular groove and said inlet port are positively not in communication.

11. A dispensing valve as defined in claim 8 having means for readily securing said closure member in said sleeve, said means comprising a resiliently deformable flange afiixed to said closure member of larger diameter than the lower portion of said sleeve bore and adapted to be compressed inwardly as said closure member is forced downwardly through said sleeve bore, the flange being adapted to abut the lower edge of said sleeve bore to prevent upward movement thereof.

12. A dispensing valve for a top-open container which comprises: a sleeve affixed to the opening in the top of said container and extending downwardly therein; a bore formed within said sleeve and terminating above the bottom of said sleeve; at least one inlet port forming a passage between the interior of said container and said bore; a dispensing closure member having an outer wall, slidably movable within said sleeve bore from a first position to a second position; a dispensing passage formed within said closure member and passing completely therethrough and adapted to communicate with said inlet port when said closure member is in said first position, said inlet port being blocked by the outer wall of said closure member when said closure member is in its second position, the portion of said outer wall of said closure member, in the region of said inlet port, being pressfitted within said sleeve bore, thereby positively sealing said closure member within said sleeve bore when in said second closed position so as to prevent leakage of material within the container through said inlet port.

13. A dispensing valve for a top opening container which comprises: a sleeve made of resiliently deformable material aflixed to the opening of said container and extending downwardly therein; a bore formed within said sleeve and terminating above the lower edge thereof; at least one inlet port communicating the interior of said container with said sleeve bore, said bore having a constricted section in the region of said inlet port; a dispensing closure member made of a resiliently deformable material and having an elongated cylindrical stem slidable within said sleeve bore, and having an upper enlarged head afiixed to said cylindrical stem; and a dispensing passage formed within said closure member passing completely therethrough along the longitudinal axis thereof, said valve having upper movement-limiting means whereby said closure member is slid upwardly within said sleeve bore a predetermined distance whereby said lower end of said closure member bore communicates with said inlet ports, said valve having downward movement-limiting means comprising the abutment of said enlarged head portion of said closure member with said sleeve, the positioning of said closure member in its most downward position being such that the walls of said 9 closure member block said inlet port, and said tapering bore of said sleeve member is distended by downward movement of said cylindrical closure member to thereby positively prevent leakage of material from said container through said inlet ports and into said dispensing passage.

14. A dispensing valve for a top-open container comprising: a sleeve affixed to the opening in the top of said container and extending downwardly therein, the opening in said top being defined by a side wall having an upper edge and a lower edge; a bore formed within said sleeve and terminating above the bottom of said sleeve, said sleeve having an upper thickened plug substantially equal in diameter to the diameter of said container opening; a resiliently deformable annular bead on the periphery of said plug; a lid of larger diameter than said plug spaced from said bead and adapted to overlap the upper edge of said container opening, the longitudinal distance between said lid and bead being substantially equal to the axial thickness of said side wall opening whereby said sleeve is adapted to be press-fitted, in a leak-proof manner, into said container by forcing said sleeve through said container opening until said lid abuts the upper surface of said container top and until said head abuts the lower edge of said container opening; an inlet port in said sleeve forming a passage between the interior of said container and said bore; a dispensing closure member slidably movable within said sleeve bore from a first position to a second position; a dispensing passage formed within said closure member and passing completely therethrough and adapted to communicate with said inlet port when said closure member is in said first position, said inlet post being blocked by the wall of said closure member when said closure member is in its second position; and means for positively sealing said closure member within said bore when in said second closed position so as to prevent leakage of material within the container through said inlet port.

15. A dispensing valve for a container having a circular top opening which comprises: a sleeve affixed to the opening in the top of said container and extending downwardly therein; a bore formed within said sleeve and terminating above the bottom of said sleeve; an inlet port forming a passage between the interior of said container and said bore; a dispensing closure member slidably movable within said sleeve bore from a first position to a second position; means for readily securing said closure member in said sleeve, said means comprising a resiliently deformable flange afixed to said closure member of larger diameter than the upper portion of said sleeve bore and adapted to be compressed inwardly as said closure member is forced downwardly through said upper portion of said sleeve here, said flange expanding into a second enlarged portion of said sleeve bore to its normal diameter, the flange being adapted to abut a shoulder formed between said bores to prevent upward movement thereof; a dispensing passage formed within said closure member and passing completely therethrough and adapted to communicate with said inlet port when said closure member is in said first position, said inlet port being blocked by the wall of said closure member when said closure member is in its second position; and means for positively sealing said closure member within said bore when in said second closed position so as to prevent leakage of material within the container through said inlet port.

16. A dispensing valve for a top-open container which comprises: a sleeve afiixed to the opening in the top of said container and extending downwardly therein; a bore formed within said sleeve and terminating above the bottom of said sleeve; an inlet port forming a passage between the interior of said container and said bore; a dispensing closure member slidably movable within said sleeve bore from a first position to a second position; a dispensing passage formed within said closure member and passing completely therethrough and adapted to communicate with said inlet ports when said closure member is in said first position, said inlet ports being blocked by the Wall of said closure member when said closure memher is in its second position; means for positively sealing said closure member within said bore when in said second closed position so as to prevent leakage of material within the container through said inlet port; means limiting the downward movement of said closure member to positively prevent communication between said inlet port and said dispensing passage; and means limiting the upward movement of said closure member insuring communication of said inlet port and said dispensing passage.

17. Apparatus according to claim 16 wherein the closure member has an enlarged head mounted at the upper end thereof and a spaced peripheral flange affixed therebelow, said head and flange each coacting with stop means on said sleeve to limit the downward and upward movement respectively of said closure member relative to said sleeve.

18. Apparatus according to claim 16 wherein the closure member has a peripheral flange afiixed to the outer wall thereof, said flange coacting with said sleeve to limit the movement of said closure member relative to said sleeve.

19. A dispensing valve for a container having a circular top opening which comprises: a sleeve afiixed to the opening of said container and having a bore formed therein; an inlet port forming a passageway between the interior of said container and said bore; a dispensing closure member slidably movable within said bore from a first position to a second position; a dispensing passage formed within said closure member and having an inlet end adapted to communicate with said inlet port when said closure member is in said first position, said inlet port being blocked when said closure member is in said second position; and means for positively sealing said closure member within said bore when said closure member is in said closed position to thereby prevent leakage of the material to be dispensed from within said container, said sealing means including a resilient plug having a portion of slightly larger diameter than the diameter of said dispensing passage, said plug being adapted to be press-fitted into the inlet end of said passage.

20. The valve of claim 1 wherein a plug is affixed to said sleeve, said plug having a portion of slightly larger diameter than the diameter of said dispensing passage, said plug being adapted to be press-fitted into the inlet end of said passage.

21. The dispensing valve according to claim 1 wherein a plug is affixed to said sleeve, said plug progressively increasing in diameter until the largest diameter thereof is slightly larger than the diameter of said dispensing passage, said plug being adapted to be press-fitted into the inlet end of said passage.

22. The dispensing valve of claim 12 wherein a plug is formed on the bottom of said bore, said plug having a portion of slightly larger diameter than the diameter of said dispensing passage.

23. The dispensing valve as defined in claim 12 wherein a resilient plug is formed on the bottom of said bore, said plug progressively increasing in diameter until the largest diameter thereof is slightly larger than the diameter of said dispensing passage, said plug-being adapted to be press-fitted into the inlet end of said passage.

References Cited in the file of this patent UNITED STATES PATENTS 1,393,331 Wilson Oct. 11, 1921 1,745,382 Rogers Feb. 4, 1930 2,738,803 Manning Mar. 20 1956 

